Removed section about compression
Removed section about compression

as this is no longer true. aSmack can use compression now by using
Android APIs. jZlib is no longer needed.

lizhangqu/asmack,tks-dp/asmack,lovecc0923/asmack,ZachGoldberg/asmack,lovecc0923/asmack,Flowdalic/asmack,ZachGoldberg/asmack,chuangWu/asmack,tks-dp/asmack,lizhangqu/asmack,chuangWu/asmack,Flowdalic/asmack